/* 全众智联 - 板块共享样式 */

/* ═══════════════════════════════════════════
   CSS 几何图标系统 — 替代 Emoji，彰显企业专业感
   ═══════════════════════════════════════════ */
.business-icon,.about-feature-icon,.manufacture-icon,
.advantage-icon,.culture-card-icon,.service-card-icon,
.about-image-icon,.partner-icon,.product-icon,
.contact-item-icon,.cert-icon,.team-stat-icon,
.landing-nav-icon,.case-image span,.product-main-placeholder,
.related-card-placeholder,.detail-error .err-icon {
    font-size: 0 !important; /* 隐藏原有 emoji 文字 */
    position: relative;
}
.business-icon::before,.about-feature-icon::before,.manufacture-icon::before,
.advantage-icon::before,.culture-card-icon::before,.service-card-icon::before,
.about-image-icon::before,.partner-icon::before,.product-icon::before,
.contact-item-icon::before,.cert-icon::before,.team-stat-icon::before,
.landing-nav-icon::before,.case-image span::before,.product-main-placeholder::before,
.related-card-placeholder::before,.detail-error .err-icon::before {
    content: ''; display: block; position: absolute;
    top: 50%; left: 50%; transform: translate(-50%,-50%);
    transition: inherit;
}

/* ── 水滴图标(商用饮水) ── */
.icon-water::before {
    width: 22px; height: 30px;
    background: var(--primary-light);
    border-radius: 80% 0 55% 55% / 55% 0 80% 80%;
    transform: translate(-50%,-50%) rotate(-45deg);
}
/* ── 球体图标(物联网) ── */
.icon-globe::before {
    width: 28px; height: 28px;
    border: 2.5px solid var(--primary-light);
    border-radius: 50%;
    background: transparent;
    box-shadow: 0 0 0 2px var(--bg), 0 0 0 3.5px var(--primary-light);
}
/* ── 汽车图标(洗车机) ── */
.icon-car::before {
    width: 36px; height: 16px;
    background: var(--primary-light);
    border-radius: 4px 12px 4px 4px;
}

/* ── 菱形(技术领先) ── */
.icon-tech::before {
    width: 18px; height: 18px;
    background: var(--primary-light);
    transform: translate(-50%,-50%) rotate(45deg);
    border-radius: 2px;
}
/* ── 四角星(品质保障) ── */
.icon-quality::before {
    width: 20px; height: 20px;
    background: var(--accent);
    clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
}
/* ── 网络节点(全国覆盖) ── */
.icon-coverage::before {
    width: 24px; height: 24px;
    border: 2px solid var(--primary-light);
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary-light) 3px, transparent 4px);
}
/* ── 握手(客户至上) ── */
.icon-service::before {
    width: 24px; height: 14px;
    border: 2.5px solid var(--primary-light);
    border-radius: 12px 12px 4px 4px;
    background: transparent;
    border-bottom: none;
}

/* ── 工厂图标 ── */
.icon-factory::before {
    width: 24px; height: 22px;
    background: var(--primary-light);
    clip-path: polygon(0% 100%, 0% 50%, 15% 50%, 15% 30%, 35% 30%, 35% 50%, 45% 50%, 45% 20%, 65% 20%, 65% 50%, 75% 50%, 75% 100%);
}
/* ── 产线/齿轮 ── */
.icon-production::before {
    width: 24px; height: 24px;
    border: 3px solid var(--primary-light);
    border-radius: 50%;
    background: transparent;
    box-shadow: 0 0 0 3px var(--bg), 0 0 0 5px var(--primary-light);
}
/* ── 研发/试管 ── */
.icon-rd::before {
    width: 8px; height: 20px;
    border: 2.5px solid var(--primary-light);
    border-radius: 0 0 6px 6px;
    background: transparent;
    border-top: none;
}
/* ── 质检/对勾 ── */
.icon-qa::before {
    width: 16px; height: 10px;
    border-left: 3px solid var(--accent);
    border-bottom: 3px solid var(--accent);
    background: transparent;
    transform: translate(-50%,-60%) rotate(-45deg);
}

/* ── 联络图标 ── */
.icon-location::before {
    width: 14px; height: 20px;
    background: var(--primary-light);
    border-radius: 50% 50% 50% 0;
    transform: translate(-50%,-50%) rotate(-45deg);
}
.icon-phone::before {
    width: 20px; height: 20px;
    border: 2.5px solid var(--primary-light);
    border-radius: 5px 5px 3px 3px;
    background: transparent;
}
.icon-email::before {
    width: 22px; height: 16px;
    border: 2.5px solid var(--primary-light);
    background: transparent;
    border-radius: 2px;
}
.icon-clock::before {
    width: 20px; height: 20px;
    border: 2.5px solid var(--primary-light);
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary-light) 1.5px, transparent 2px);
}

/* ── 制造图标(工厂大图标) ── */
.icon-manufacturing::before {
    width: 50px; height: 50px;
    border: 3px solid rgba(255,255,255,.5);
    background: rgba(255,255,255,.08);
    border-radius: 10px;
}

/* ── 对勾图标(解决方案feature) ── */
.solution-feature-item::before {
    content: ''; display: inline-block;
    width: 8px; height: 12px;
    border-right: 2px solid var(--accent);
    border-bottom: 2px solid var(--accent);
    transform: rotate(45deg);
    margin-right: 2px;
}

/* ── HERO 区 ── */
.hero {
    position: relative; min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden; padding: 120px 2rem 80px; isolation: isolate;
    background: linear-gradient(180deg, var(--primary) 0%, #0D3668 50%, var(--primary) 100%);
}
.hero::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0;
    height: 140px;
    background: linear-gradient(to top, var(--bg), transparent);
    z-index: 3; pointer-events: none;
}
.hero-bg {
    position: absolute; inset: 0; z-index: 0;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 900"><defs><pattern id="grid" width="60" height="60" patternUnits="userSpaceOnUse"><path d="M 60 0 L 0 0 0 60" fill="none" stroke="rgba(255,255,255,.03)" stroke-width="1"/></pattern><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="2" cy="2" r="1" fill="rgba(255,255,255,.05)"/></pattern></defs><rect width="100%25" height="100%25" fill="url(%23grid)"/><rect width="100%25" height="100%25" fill="url(%23dots)"/></svg>');
    background-size: cover;
}
.hero-glow {
    position: absolute; z-index: 0;
    width: 800px; height: 800px;
    border-radius: 50%;
    filter: blur(120px); opacity: .15;
}
.hero-glow-1 {
    top: -200px; left: -200px;
    background: var(--primary-light);
    animation: heroGlowFloat 10s ease-in-out infinite alternate;
}
.hero-glow-2 {
    bottom: -300px; right: -150px;
    background: var(--accent);
    animation: heroGlowFloat 12s ease-in-out infinite alternate-reverse;
}
@keyframes heroGlowFloat {
    0% { transform: translate(0,0) scale(1); }
    100% { transform: translate(30px,-20px) scale(1.15); }
}
.hero-image-bg {
    position: absolute; inset: 0; z-index: 0;
    background-size: cover; background-position: center;
    opacity: .25;
    animation: kenBurnsSlow 20s ease-in-out infinite alternate;
}
@keyframes kenBurnsSlow {
    0% { transform: scale(1); }
    100% { transform: scale(1.06); }
}

.hero-content {
    position: relative; z-index: 2;
    max-width: 900px; text-align: center;
    animation: fadeInUp .8s ease;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 10px;
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    padding: .5rem 1.5rem;
    font-size: .88rem; color: rgba(255,255,255,.9);
    font-weight: 500; margin-bottom: 2rem; letter-spacing: 1px;
}
.hero-badge-dot {
    width: 8px; height: 8px;
    background: var(--accent); border-radius: 50%;
    box-shadow: 0 0 12px var(--accent);
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 10px var(--accent); }
    50% { opacity: .3; box-shadow: 0 0 24px var(--accent); }
}
.hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    font-weight: 900; color: #fff;
    line-height: 1.2; margin-bottom: 1.2rem;
    letter-spacing: -1px;
    text-shadow: 0 4px 30px rgba(0,0,0,.3);
}
.hero h1 .highlight {
    background: linear-gradient(135deg, #FF6B35, #FF8C60);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(255,107,53,.3));
}
.hero-desc {
    font-size: clamp(1rem, 1.6vw, 1.2rem);
    color: rgba(255,255,255,.75);
    max-width: 700px; margin: 0 auto 2.5rem; line-height: 1.9;
}
.hero-buttons {
    display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
}
.hero-stats {
    display: flex; gap: 3.5rem; justify-content: center;
    margin-top: 4rem; padding-top: 2.5rem;
    border-top: 1px solid rgba(255,255,255,.1);
}
.hero-stat { text-align: center; }
.hero-stat-num {
    font-size: 2.4rem; font-weight: 900; color: #fff;
    font-variant-numeric: tabular-nums;
}
.hero-stat-num span {
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-stat-label {
    font-size: .85rem; color: rgba(255,255,255,.5);
    margin-top: .3rem; font-weight: 500;
}

/* ── HERO CAROUSEL ── */
.hero-carousel {
    position: absolute; inset: 0; z-index: 1; overflow: hidden;
}
.carousel-track {
    position: relative; width: 100%; height: 100%;
    display: flex; transition: transform .7s cubic-bezier(.25,.1,.25,1);
}
.carousel-slide {
    min-width: 100%; height: 100%; position: relative; overflow: hidden;
    background-size: cover; background-position: center;
}
.carousel-slide-overlay {
    position: absolute; inset: 0; z-index: 1;
    background: linear-gradient(135deg, rgba(10,46,92,.7) 0%, rgba(10,46,92,.35) 45%, rgba(10,46,92,.55) 100%);
}
.carousel-slide-content {
    position: absolute; bottom: 18%; left: 10%; right: 10%;
    z-index: 2; color: #fff; overflow: hidden;
    animation: fadeInUp .8s ease both;
}
.carousel-slide-content h2 {
    font-size: clamp(1.4rem, 3vw, 2.6rem);
    font-weight: 900; margin-bottom: .6rem;
    text-shadow: 0 4px 30px rgba(0,0,0,.5);
    line-height: 1.2; letter-spacing: -.5px;
    overflow: hidden; text-overflow: ellipsis;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.carousel-slide-content p {
    font-size: clamp(.85rem, 1.3vw, 1.1rem);
    opacity: .9; text-shadow: 0 2px 16px rgba(0,0,0,.4);
    max-width: 600px; line-height: 1.7;
    overflow: hidden; text-overflow: ellipsis;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.carousel-slide-link {
    display: inline-block; margin-top: 1rem;
    padding: .6rem 1.8rem;
    background: var(--gradient-accent); color: #fff;
    border-radius: var(--radius-full); text-decoration: none;
    font-weight: 600; font-size: .88rem;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(255,107,53,.4);
}
.carousel-slide-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255,107,53,.6);
}
.carousel-dots {
    position: absolute; bottom: 8%; left: 50%;
    transform: translateX(-50%); z-index: 3;
    display: flex; gap: 12px;
}
.carousel-dot {
    width: 12px; height: 12px; border-radius: 50%;
    background: rgba(255,255,255,.35);
    border: 2px solid rgba(255,255,255,.4);
    cursor: pointer; transition: var(--transition);
}
.carousel-dot:hover { background: rgba(255,255,255,.6); }
.carousel-dot.active {
    background: var(--accent); border-color: var(--accent);
    box-shadow: 0 0 12px rgba(255,107,53,.5);
    transform: scale(1.3);
}
.carousel-arrow {
    position: absolute; top: 50%; transform: translateY(-50%);
    z-index: 3; width: 50px; height: 50px; border-radius: 50%;
    background: rgba(255,255,255,.12); backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,.2);
    color: #fff; font-size: 1.6rem; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition); line-height: 1;
}
.carousel-arrow:hover {
    background: rgba(255,255,255,.25);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 0 20px rgba(255,255,255,.15);
}
.carousel-prev { left: 24px; }
.carousel-next { right: 24px; }

/* ── SECTION 通用 ── */
.section {
    padding: 100px 2rem; position: relative; background: var(--bg);
}
.section-alt {
    background: var(--bg-alt); position: relative; overflow: hidden;
}
.section-alt::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(30,95,191,.03) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 80%, rgba(255,107,53,.02) 0%, transparent 60%);
    pointer-events: none;
}
.section-container {
    max-width: 1300px; margin: 0 auto; position: relative; z-index: 1;
}
.section-header { text-align: center; margin-bottom: 4rem; }
.section-tag {
    display: inline-block;
    background: rgba(30,95,191,.08); color: var(--primary-light);
    padding: .35rem 1.3rem; border-radius: var(--radius-full);
    font-size: .78rem; font-weight: 700; margin-bottom: 1rem;
    letter-spacing: 3px; text-transform: uppercase;
    border: 1px solid rgba(30,95,191,.12);
}
.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 800; margin-bottom: .8rem;
    letter-spacing: -.5px; color: var(--primary);
}
.section-subtitle {
    font-size: 1.08rem; color: var(--text-body);
    max-width: 650px; margin: 0 auto; line-height: 1.7;
}

/* ── 核心业务卡片 ── */
.business-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.business-card {
    background: #fff; border-radius: var(--radius);
    padding: 2.5rem 2rem; text-align: center;
    border: 1px solid rgba(10,46,92,.06);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative; overflow: hidden;
}
.business-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-light), var(--accent));
    transform: scaleX(0); transform-origin: left;
    transition: transform .5s cubic-bezier(.4,0,.2,1);
}
.business-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(30,95,191,.12);
}
.business-card:hover::before { transform: scaleX(1); }
.business-icon {
    width: 72px; height: 72px; margin: 0 auto 1.2rem;
    background: var(--gradient-subtle); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; transition: var(--transition);
}
.business-card:hover .business-icon {
    background: var(--gradient); color: #fff;
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(30,95,191,.15);
}
.business-card h3 {
    font-size: 1.12rem; font-weight: 700;
    color: var(--text-dark); margin-bottom: .6rem;
}
.business-card p {
    font-size: .88rem; color: var(--text-body);
    line-height: 1.7; margin-bottom: 1rem;
}
.business-link {
    display: inline-flex; align-items: center; gap: 4px;
    color: var(--primary-light); font-weight: 600;
    font-size: .88rem; text-decoration: none;
    transition: gap .3s ease, color .2s;
}
.business-link::after { content: '→'; transition: transform .3s; }
.business-link:hover { gap: 10px; color: var(--primary); }
.business-link:hover::after { transform: translateX(3px); }

/* ── 产品展示网格 ── */
.products-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
}
.product-card {
    background: #fff; border-radius: var(--radius);
    padding: 1.8rem 1.5rem; border: 1px solid rgba(10,46,92,.06);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative; overflow: hidden;
    display: block; text-decoration: none; color: inherit;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(30,95,191,.12);
}
.product-icon {
    width: 56px; height: 56px;
    background: var(--gradient-subtle); border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; margin-bottom: 1rem;
    transition: var(--transition);
}
.product-card:hover .product-icon {
    background: var(--gradient);
    transform: scale(1.08);
}
.product-card h3 {
    font-size: 1.05rem; font-weight: 700;
    color: var(--text-dark); margin-bottom: .5rem;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.product-card p {
    font-size: .86rem; color: var(--text-body);
    line-height: 1.65; margin-bottom: .8rem;
    overflow: hidden; text-overflow: ellipsis;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.product-tags {
    display: flex; flex-wrap: wrap; gap: 6px;
    margin-bottom: .8rem;
}
.product-tag {
    font-size: .73rem;
    background: rgba(30,95,191,.07);
    color: var(--primary-light);
    padding: 3px 10px; border-radius: var(--radius-full);
    font-weight: 500;
}
.product-actions {
    display: flex; gap: .5rem; flex-wrap: wrap;
}
.product-action-btn {
    font-size: .78rem; font-weight: 600;
    padding: .4rem 1rem; border-radius: var(--radius-full);
    text-decoration: none; display: inline-flex; align-items: center;
    gap: 4px; transition: var(--transition-fast);
    border: 1.5px solid rgba(10,46,92,.15);
    color: var(--primary); background: transparent;
}
.product-action-btn:hover {
    background: var(--primary-light); color: #fff;
    border-color: var(--primary-light);
}
.product-action-btn.accent {
    border-color: var(--accent); color: var(--accent);
}
.product-action-btn.accent:hover {
    background: var(--accent); color: #fff; border-color: var(--accent);
}
.product-cover-img {
    width: 100%; height: 160px; object-fit: cover;
    border-radius: var(--radius-sm); margin-bottom: 1rem;
    transition: transform .5s ease;
}
.product-card:hover .product-cover-img { transform: scale(1.03); }

/* ── 分类筛选标签 ── */
.filter-tabs {
    display: flex; flex-wrap: wrap; gap: .5rem;
    justify-content: center; margin-bottom: 2.5rem;
}
.filter-tab {
    padding: .55rem 1.4rem;
    border: 1.5px solid rgba(10,46,92,.1);
    border-radius: var(--radius-full);
    background: #fff; color: var(--text-body);
    font-size: .88rem; font-weight: 500; cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
}
.filter-tab:hover {
    border-color: var(--primary-light);
    color: var(--primary-light);
    background: rgba(30,95,191,.04);
}
.filter-tab.active {
    background: var(--gradient); color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 16px rgba(30,95,191,.25);
}

/* ── 解决方案卡片 ── */
.solutions-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem;
}
.solution-card {
    background: #fff; border: 1px solid rgba(10,46,92,.06);
    border-radius: var(--radius); padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative; overflow: hidden;
}
.solution-card:hover {
    border-color: rgba(30,95,191,.15);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.solution-num {
    font-size: 2.6rem; font-weight: 900;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text; margin-bottom: .4rem; line-height: 1;
}
.solution-card h3 {
    font-size: 1.2rem; font-weight: 700;
    color: var(--text-dark); margin-bottom: .6rem;
}
.solution-card p {
    font-size: .9rem; color: var(--text-body); line-height: 1.7;
}
.solution-features-list {
    display: flex; flex-wrap: wrap; gap: .8rem;
    margin-top: 1rem;
}
.solution-feature-item {
    display: flex; align-items: center; gap: 5px;
    font-size: .83rem; color: var(--text-body);
    background: var(--bg-alt); padding: .3rem .75rem;
    border-radius: var(--radius-full);
}
.solution-feature-item::before {
    content: '✓'; color: var(--accent); font-weight: 700; font-size: .85rem;
}
.solution-card.featured { grid-column: 1 / -1; }

/* ── 信任背书 ── */
.trust-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
}
.trust-card {
    text-align: center; padding: 2rem 1.2rem;
    background: #fff; border: 1px solid rgba(10,46,92,.06);
    border-radius: var(--radius); box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.trust-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.trust-num {
    font-size: 2.4rem; font-weight: 900;
    color: var(--primary); margin-bottom: .3rem;
    font-variant-numeric: tabular-nums;
}
.trust-num span {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.trust-label { font-size: .85rem; color: var(--text-body); font-weight: 500; }
.partners-scroll {
    display: flex; gap: 3rem; justify-content: center;
    flex-wrap: wrap; align-items: center;
    opacity: .6; transition: opacity .4s;
    margin-top: 2.5rem;
}
.partners-scroll:hover { opacity: 1; }
.partner-item {
    display: flex; align-items: center; gap: 10px;
    font-size: 1.1rem; font-weight: 700; color: var(--text-light);
    white-space: nowrap; transition: var(--transition);
}
.partner-item:hover { color: var(--primary-light); transform: translateY(-2px); }
.partner-icon {
    width: 48px; height: 48px;
    background: var(--gradient-subtle); border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem; transition: var(--transition);
}
.partner-item:hover .partner-icon {
    background: var(--gradient); color: #fff;
}

/* ── 关于我们 ── */
.about-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center;
}
.about-image-wrap {
    position: relative; border-radius: var(--radius);
    overflow: hidden; aspect-ratio: 4/3;
    background: var(--gradient); box-shadow: var(--shadow-xl);
}
.about-image-inner {
    width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    flex-direction: column; gap: 1rem; color: #fff;
    position: relative; z-index: 1;
}
.about-tech-grid {
    position: absolute; inset: 0; z-index: 0;
    display: grid; grid-template-columns: repeat(3,1fr);
    grid-template-rows: repeat(3,1fr); gap: 1px; opacity: .1;
}
.about-tech-cell { background: #fff; border-radius: 2px; }
.about-image-icon { font-size: 4rem; z-index: 1; text-shadow: 0 0 40px rgba(255,255,255,.2); }
.about-image-label { font-size: 1.2rem; font-weight: 700; z-index: 1; letter-spacing: 4px; }
.about-experience {
    position: absolute; bottom: 24px; right: 24px; z-index: 2;
    background: rgba(255,255,255,.92); backdrop-filter: blur(16px);
    border-radius: var(--radius-sm); padding: 1rem 1.4rem;
    box-shadow: var(--shadow-lg); border: 1px solid rgba(0,0,0,.06);
}
.about-experience-num {
    font-size: 2rem; font-weight: 900; color: var(--primary-light); line-height: 1;
}
.about-experience-label { font-size: .8rem; color: var(--text-body); margin-top: 4px; }
.about-content h3 {
    font-size: 1.6rem; font-weight: 700; color: var(--primary); margin-bottom: 1rem;
}
.about-content p {
    color: var(--text-body); margin-bottom: 1.2rem; line-height: 1.85; font-size: .96rem;
}
.about-features {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.2rem;
}
.about-feature {
    display: flex; align-items: flex-start; gap: .8rem;
    padding: .8rem; border-radius: var(--radius-sm);
    background: var(--bg-alt); transition: var(--transition);
}
.about-feature:hover { background: rgba(30,95,191,.04); }
.about-feature-icon {
    width: 44px; height: 44px; min-width: 44px;
    background: rgba(30,95,191,.08); border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; color: var(--primary-light);
}
.about-feature h4 { font-size: .92rem; font-weight: 600; color: var(--text-dark); margin-bottom: 2px; }
.about-feature p { font-size: .83rem; color: var(--text-body); margin: 0; line-height: 1.6; }

/* ── 制造实力 ── */
.manufacture-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
}
.manufacture-card {
    text-align: center; padding: 2.2rem 1.5rem;
    background: #fff; border: 1px solid rgba(10,46,92,.06);
    border-radius: var(--radius); box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.manufacture-card:hover {
    transform: translateY(-4px); box-shadow: var(--shadow-md);
}
.manufacture-icon {
    font-size: 2.5rem; margin-bottom: .8rem; display: block;
    transition: transform .3s;
}
.manufacture-card:hover .manufacture-icon { transform: scale(1.15); }
.manufacture-card h4 {
    font-size: 1rem; font-weight: 700; color: var(--primary); margin-bottom: .3rem;
}
.manufacture-card p {
    font-size: .83rem; color: var(--text-body); line-height: 1.6;
}

/* ── 核心优势 ── */
.advantages-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
}
.advantage-card {
    text-align: center; padding: 2.5rem 1.5rem;
    background: #fff; border: 1px solid rgba(10,46,92,.06);
    border-radius: var(--radius); box-shadow: var(--shadow-sm);
    transition: var(--transition); position: relative; overflow: hidden;
}
.advantage-card::before {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--primary-light), var(--accent));
    transform: scaleX(0); transform-origin: left;
    transition: transform .5s cubic-bezier(.4,0,.2,1);
}
.advantage-card:hover {
    transform: translateY(-6px); box-shadow: var(--shadow-lg);
}
.advantage-card:hover::before { transform: scaleX(1); }
.advantage-icon {
    width: 66px; height: 66px; margin: 0 auto 1rem;
    background: var(--gradient-subtle); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem; transition: var(--transition);
}
.advantage-card:hover .advantage-icon {
    background: var(--gradient);
    transform: scale(1.08);
    box-shadow: 0 8px 30px rgba(30,95,191,.15);
}
.advantage-card h3 {
    font-size: 1.05rem; font-weight: 700; color: var(--text-dark); margin-bottom: .4rem;
}
.advantage-card p {
    font-size: .85rem; color: var(--text-body); line-height: 1.65;
}

/* ── 时间轴 ── */
.timeline-wrap {
    position: relative; max-width: 900px; margin: 0 auto;
}
.timeline-wrap::before {
    content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px;
    background: linear-gradient(180deg, var(--primary-light), var(--accent), var(--primary-light));
    transform: translateX(-50%); border-radius: 1px;
}
.timeline-item {
    display: flex; align-items: flex-start; margin-bottom: 3rem;
    position: relative; opacity: 0;
    transform: translateY(30px);
    transition: all .7s cubic-bezier(.16,1,.3,1);
}
.timeline-item.visible { opacity: 1; transform: translateY(0); }
.timeline-item:nth-child(odd) { flex-direction: row; padding-right: calc(50% + 2.5rem); }
.timeline-item:nth-child(even) { flex-direction: row-reverse; padding-left: calc(50% + 2.5rem); }
.timeline-dot {
    width: 16px; height: 16px; min-width: 16px;
    background: var(--gradient); border-radius: 50%;
    border: 3px solid #fff; box-shadow: 0 0 0 4px rgba(30,95,191,.15);
    position: absolute; left: 50%; top: 8px;
    transform: translateX(-50%); z-index: 2;
}
.timeline-content {
    background: #fff; border: 1px solid rgba(10,46,92,.06);
    border-radius: var(--radius); padding: 1.5rem;
    box-shadow: var(--shadow-sm); transition: var(--transition); position: relative;
}
.timeline-content:hover {
    box-shadow: var(--shadow-md); transform: translateY(-2px);
}
.timeline-year {
    display: inline-block;
    background: var(--gradient); color: #fff;
    padding: .2rem 1rem; border-radius: var(--radius-full);
    font-size: .82rem; font-weight: 700; margin-bottom: .5rem;
}
.timeline-content h4 {
    font-size: 1.05rem; font-weight: 700; color: var(--text-dark); margin-bottom: .3rem;
}
.timeline-content p { font-size: .86rem; color: var(--text-body); line-height: 1.65; }

/* ── 资质荣誉 ── */
.certs-grid {
    display: grid; grid-template-columns: repeat(6, 1fr); gap: 1.5rem;
}
.cert-card {
    text-align: center; padding: 2rem 1rem;
    background: #fff; border: 1px solid rgba(10,46,92,.06);
    border-radius: var(--radius); box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.cert-card:hover {
    border-color: rgba(30,95,191,.12);
    transform: translateY(-6px); box-shadow: var(--shadow-lg);
}
.cert-icon { font-size: 2.6rem; margin-bottom: .6rem; display: block; }
.cert-card h4 { font-size: .9rem; font-weight: 700; color: var(--text-dark); margin-bottom: .2rem; }
.cert-card p { font-size: .76rem; color: var(--text-body); }

/* ── 团队与文化 ── */
.team-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem;
}
.team-stat-card {
    background: #fff; border-radius: var(--radius); padding: 1.8rem;
    border: 1px solid rgba(10,46,92,.06); box-shadow: var(--shadow-sm);
    display: flex; align-items: center; gap: 1.2rem;
    transition: var(--transition);
}
.team-stat-card:hover {
    box-shadow: var(--shadow-md); transform: translateY(-4px);
}
.team-stat-icon {
    width: 64px; height: 64px; min-width: 64px;
    background: var(--gradient-subtle); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem; transition: var(--transition);
}
.team-stat-card:hover .team-stat-icon {
    background: var(--gradient); transform: scale(1.05);
}
.team-stat-card h4 { font-size: .98rem; font-weight: 700; color: var(--text-dark); margin-bottom: .2rem; }
.team-stat-card p { font-size: .83rem; color: var(--text-body); line-height: 1.6; }
.culture-cards {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: 1.8rem;
}
.culture-card {
    text-align: center; padding: 2rem 1rem;
    background: #fff; border: 1px solid rgba(10,46,92,.06);
    border-radius: var(--radius); box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.culture-card:hover {
    border-color: rgba(30,95,191,.2);
    box-shadow: var(--shadow-md); transform: translateY(-4px);
}
.culture-card-icon {
    font-size: 2.2rem; margin-bottom: .6rem; display: block;
    transition: transform .3s;
}
.culture-card:hover .culture-card-icon { transform: scale(1.2); }
.culture-card h4 { font-size: .95rem; font-weight: 700; color: var(--primary-light); margin-bottom: .3rem; }
.culture-card p { font-size: .8rem; color: var(--text-body); line-height: 1.55; }

/* ── 客户案例 ── */
.cases-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.case-card {
    background: #fff; border-radius: var(--radius); overflow: hidden;
    border: 1px solid rgba(10,46,92,.06); box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.case-card:hover {
    box-shadow: var(--shadow-lg); transform: translateY(-6px);
}
.case-image {
    height: 200px; display: flex; align-items: center; justify-content: center;
    font-size: 3.2rem; position: relative; overflow: hidden;
}
.case-image::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(10,46,92,.15), rgba(10,46,92,.4));
    transition: opacity .4s;
}
.case-card:hover .case-image::before { opacity: .6; }
.case-image span {
    position: relative; z-index: 1;
    text-shadow: 0 0 30px rgba(255,255,255,.2);
    transition: transform .4s;
}
.case-card:hover .case-image span { transform: scale(1.12); }
.case-body { padding: 1.4rem; }
.case-body .case-industry {
    display: inline-block; font-size: .73rem;
    background: rgba(30,95,191,.07); color: var(--primary-light);
    padding: 3px 12px; border-radius: var(--radius-full);
    margin-bottom: .5rem; font-weight: 500;
}
.case-body h3 {
    font-size: 1.05rem; font-weight: 700; color: var(--text-dark); margin-bottom: .4rem;
}
.case-body p {
    font-size: .85rem; color: var(--text-body); line-height: 1.65; margin-bottom: .8rem;
}
.case-stats { display: flex; gap: 1.2rem; border-top: 1px solid rgba(10,46,92,.06); padding-top: .8rem; }
.case-stat { text-align: center; }
.case-stat strong { display: block; font-size: 1.1rem; color: var(--primary-light); }
.case-stat span { font-size: .73rem; color: var(--text-light); }

/* ── 新闻 ── */
.news-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.news-card {
    background: #fff; border-radius: var(--radius); overflow: hidden;
    border: 1px solid rgba(10,46,92,.06); box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.news-card:hover {
    box-shadow: var(--shadow-lg); transform: translateY(-6px);
}
.news-image {
    height: 190px; background: var(--gradient-subtle);
    display: flex; align-items: center; justify-content: center;
    font-size: 2.4rem; position: relative; overflow: hidden;
}
.news-cover-img, .product-cover-img {
    width: 100%; height: 190px; object-fit: cover;
    border-radius: var(--radius) var(--radius) 0 0;
    transition: transform .5s ease;
}
.news-card:hover .news-cover-img { transform: scale(1.04); }
.news-body { padding: 1.4rem; }
.news-date {
    font-size: .78rem; color: var(--text-light); margin-bottom: .5rem;
    display: flex; align-items: center; gap: .3rem;
}
.news-body h3 {
    font-size: 1rem; font-weight: 700; color: var(--text-dark);
    margin-bottom: .5rem; line-height: 1.5;
    transition: color .2s;
}
.news-card:hover .news-body h3 { color: var(--primary-light); }
.news-body p {
    font-size: .84rem; color: var(--text-body); line-height: 1.65; margin-bottom: .8rem;
}
.news-link {
    font-size: .85rem; color: var(--primary-light); text-decoration: none;
    font-weight: 600; display: inline-flex; align-items: center; gap: 4px;
    transition: gap .3s ease, color .2s;
}
.news-link::after { content: '→'; transition: transform .3s; }
.news-link:hover { gap: 10px; color: var(--primary); }
.news-link:hover::after { transform: translateX(3px); }

/* ── FAQ ── */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
    background: #fff; border: 1px solid rgba(10,46,92,.06);
    border-radius: var(--radius-sm); margin-bottom: .7rem;
    overflow: hidden; transition: var(--transition);
}
.faq-item.active { border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(30,95,191,.06); }
.faq-question {
    display: flex; justify-content: space-between; align-items: center;
    padding: 1.2rem 1.4rem; cursor: pointer; font-weight: 600;
    font-size: .95rem; background: none; border: none;
    width: 100%; text-align: left; font-family: inherit;
    color: var(--text-dark); gap: 1rem;
    transition: color .2s, background .2s;
}
.faq-question:hover { color: var(--primary-light); background: rgba(30,95,191,.02); }
.faq-icon {
    width: 28px; height: 28px; min-width: 28px; border-radius: 50%;
    background: rgba(30,95,191,.08); display: flex;
    align-items: center; justify-content: center;
    font-size: .85rem; font-weight: 700;
    transition: var(--transition); color: var(--primary-light);
}
.faq-item.active .faq-icon {
    background: var(--primary-light); color: #fff; transform: rotate(45deg);
}
.faq-answer {
    max-height: 0; overflow: hidden;
    transition: max-height .45s ease, padding .45s ease;
}
.faq-item.active .faq-answer { max-height: 400px; }
.faq-answer-content {
    padding: 0 1.4rem 1.2rem; color: var(--text-body);
    font-size: .88rem; line-height: 1.75;
}

/* ── 技术服务 ── */
.service-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.service-card {
    background: #fff; border: 1px solid rgba(10,46,92,.06);
    border-radius: var(--radius); padding: 2rem; text-align: center;
    box-shadow: var(--shadow-sm); transition: var(--transition);
}
.service-card:hover {
    border-color: rgba(30,95,191,.15);
    transform: translateY(-6px); box-shadow: var(--shadow-md);
}
.service-card-icon {
    font-size: 2.5rem; margin-bottom: .8rem; display: block;
    transition: transform .4s;
}
.service-card:hover .service-card-icon { transform: scale(1.1); }
.service-card h3 {
    font-size: 1.05rem; font-weight: 700; color: var(--text-dark); margin-bottom: .5rem;
}
.service-card p {
    font-size: .85rem; color: var(--text-body); line-height: 1.65; margin-bottom: 1rem;
}
.service-tag-list { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.service-tag {
    font-size: .72rem;
    background: rgba(30,95,191,.07); color: var(--primary-light);
    padding: 3px 10px; border-radius: var(--radius-full);
    border: 1px solid rgba(30,95,191,.1);
}

/* ── 联系我们 ── */
.contact-grid {
    display: grid; grid-template-columns: 1fr 1.2fr; gap: 3rem; align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-info h3 {
    font-size: 1.5rem; font-weight: 700; color: var(--primary); margin-bottom: .2rem;
}
.contact-info > p { font-size: .93rem; color: var(--text-body); line-height: 1.75; }
.contact-item {
    display: flex; align-items: flex-start; gap: .9rem;
    padding: .8rem; border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}
.contact-item:hover { background: var(--bg-alt); }
.contact-item-icon {
    width: 44px; height: 44px; min-width: 44px;
    background: rgba(30,95,191,.08); border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; color: var(--primary-light);
    transition: var(--transition);
}
.contact-item:hover .contact-item-icon {
    background: var(--primary-light); color: #fff;
}
.contact-item h4 { font-size: .88rem; font-weight: 600; color: var(--text-dark); margin-bottom: 2px; }
.contact-item p { font-size: .86rem; color: var(--text-body); line-height: 1.6; }
.contact-item a { color: var(--primary-light); text-decoration: none; transition: color .2s; }
.contact-item a:hover { color: var(--primary); text-decoration: underline; }
.contact-form {
    background: #fff; padding: 2.5rem;
    border-radius: var(--radius); border: 1px solid rgba(10,46,92,.06);
    box-shadow: var(--shadow-sm); transition: var(--transition);
}
.contact-form:hover { box-shadow: var(--shadow-md); }
.form-row {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1rem;
}
.form-group { margin-bottom: 1rem; }
.form-group label {
    display: block; font-size: .86rem; font-weight: 600;
    margin-bottom: .35rem; color: var(--text-dark);
}
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: .75rem 1rem;
    border: 1.5px solid rgba(10,46,92,.1);
    border-radius: var(--radius-sm);
    font-size: .9rem; font-family: inherit;
    transition: var(--transition-fast);
    background: #fff; color: var(--text-dark);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--primary-light);
    box-shadow: 0 0 0 4px rgba(30,95,191,.06);
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-group select {
    cursor: pointer; appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%2364748b'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 1rem center;
    padding-right: 2.5rem; color: var(--text-body);
}
.form-submit {
    width: 100%; background: var(--gradient-accent); color: #fff;
    border: none; padding: .9rem; border-radius: var(--radius-full);
    font-size: .98rem; font-weight: 600; cursor: pointer;
    transition: var(--transition); font-family: inherit;
    box-shadow: 0 4px 20px rgba(255,107,53,.3);
    letter-spacing: .5px;
    position: relative; overflow: hidden;
}
.form-submit::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,.15), transparent);
    opacity: 0; transition: opacity .3s;
}
.form-submit:hover {
    box-shadow: 0 8px 30px rgba(255,107,53,.5);
    transform: translateY(-2px);
}
.form-submit:hover::after { opacity: 1; }

/* ── 地图 ── */
.map-container {
    width: 100%; height: 360px; border-radius: var(--radius);
    overflow: hidden; border: 1px solid rgba(10,46,92,.08);
    margin-top: 1rem;
}
.map-container iframe {
    width: 100%; height: 100%; border: none;
}

/* ── CTA 区块 ── */
.cta-section {
    background: var(--gradient); padding: 80px 2rem;
    text-align: center; position: relative; overflow: hidden;
    isolation: isolate;
}
.cta-section::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(255,107,53,.15) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 50%, rgba(30,95,191,.2) 0%, transparent 50%);
    z-index: 0;
}
.cta-section .section-container { z-index: 1; }
.cta-section h2 {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 900; color: #fff; margin-bottom: .8rem;
}
.cta-section p {
    font-size: 1.05rem; color: rgba(255,255,255,.8);
    max-width: 600px; margin: 0 auto 1.5rem;
}
.cta-section .btn-accent {
    background: var(--accent); color: #fff;
    box-shadow: 0 4px 24px rgba(255,107,53,.4);
}

/* ── 首页导航区(LANDING) ── */
.landing-nav-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.landing-nav-card {
    background: #fff; border-radius: var(--radius); padding: 2.5rem 2rem;
    text-align: center; border: 1px solid rgba(10,46,92,.06);
    box-shadow: var(--shadow-sm); transition: var(--transition);
    text-decoration: none; color: inherit; display: block;
    position: relative; overflow: hidden;
}
.landing-nav-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, var(--primary-light), var(--accent));
    transform: scaleX(0); transform-origin: left;
    transition: transform .5s cubic-bezier(.4,0,.2,1);
}
.landing-nav-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(30,95,191,.1);
}
.landing-nav-card:hover::before { transform: scaleX(1); }
.landing-nav-icon {
    font-size: 2.6rem; margin-bottom: .8rem; display: block;
    transition: transform .4s;
}
.landing-nav-card:hover .landing-nav-icon { transform: scale(1.12); }
.landing-nav-card h3 {
    font-size: 1.15rem; font-weight: 700; color: var(--text-dark); margin-bottom: .5rem;
}
.landing-nav-card p {
    font-size: .86rem; color: var(--text-body); line-height: 1.65;
}

/* ── 查看全部 ── */
.view-all {
    text-align: center; margin-top: 2.5rem;
}
.view-all a {
    display: inline-flex; align-items: center; gap: 6px;
    color: var(--primary-light); text-decoration: none;
    font-weight: 600; font-size: .92rem;
    padding: .6rem 1.8rem; border: 2px solid var(--primary-light);
    border-radius: var(--radius-full); transition: var(--transition);
}
.view-all a:hover {
    background: var(--primary-light); color: #fff;
    box-shadow: 0 4px 20px rgba(30,95,191,.25);
}
.view-all a::after { content: '→'; transition: transform .3s; }
.view-all a:hover::after { transform: translateX(4px); }

/* ── 浮动CTA ── */
.float-cta {
    position: fixed; right: 28px; bottom: 90px; z-index: 998;
    display: flex; flex-direction: column; gap: 10px;
}
.float-btn {
    width: 50px; height: 50px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; border: none;
    box-shadow: var(--shadow-lg); transition: var(--transition);
    text-decoration: none; color: #fff; font-size: 0; position: relative;
}
.float-btn::before {
    content: ''; display: block; transition: inherit;
}
.float-btn-phone {
    background: var(--gradient);
    animation: pulse-ring 2s ease-in-out infinite;
}
.float-btn-phone::before {
    width: 18px; height: 18px;
    border: 2px solid #fff;
    border-radius: 4px 4px 3px 3px;
    background: transparent;
}
.float-btn-wechat {
    background: linear-gradient(135deg, #07C160, #06AD56);
}
.float-btn-wechat::before {
    width: 18px; height: 16px;
    border-radius: 8px 8px 8px 3px;
    background: #fff;
}
.float-btn:hover {
    transform: translateY(-6px) scale(1.1);
    box-shadow: var(--shadow-xl);
}
@keyframes pulse-ring {
    0% { box-shadow: 0 0 0 0 rgba(30,95,191,.3); }
    70% { box-shadow: 0 0 0 16px rgba(30,95,191,0); }
    100% { box-shadow: 0 0 0 0 rgba(30,95,191,0); }
}

/* ── 页面子导航 ── */
.page-subnav {
    background: rgba(255,255,255,.95);
    border-bottom: 1px solid rgba(10,46,92,.06);
    position: sticky; top: 76px; z-index: 99;
    box-shadow: 0 4px 20px rgba(10,46,92,.05);
    backdrop-filter: blur(16px);
}
.page-subnav-container {
    max-width: 1300px; margin: 0 auto;
    display: flex; overflow-x: auto;
    scrollbar-width: none;
}
.page-subnav-container::-webkit-scrollbar { display: none; }
.page-subnav a {
    display: inline-block; padding: .9rem 1.4rem;
    font-size: .88rem; font-weight: 500;
    color: var(--text-body); text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: var(--transition-fast); white-space: nowrap;
}
.page-subnav a:hover { color: var(--primary-light); background: rgba(30,95,191,.03); }
.page-subnav a.active { color: var(--primary-light); border-bottom-color: var(--primary-light); font-weight: 600; }

/* ── 产品详情 ── */
.product-detail-layout {
    display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start;
}
.product-main-img {
    width: 100%; border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}
.product-main-placeholder {
    width: 100%; aspect-ratio: 1;
    background: var(--gradient-subtle); border-radius: var(--radius);
    display: flex; align-items: center; justify-content: center;
    font-size: 5rem;
}
.product-meta { display: flex; gap: .8rem; margin-bottom: 1rem; }
.product-cat-badge {
    background: rgba(30,95,191,.07); color: var(--primary-light);
    padding: .25rem 1rem; border-radius: var(--radius-full);
    font-size: .8rem; font-weight: 500;
}
.product-status-badge {
    background: rgba(16,185,129,.1); color: #34d399;
    padding: .25rem 1rem; border-radius: var(--radius-full);
    font-size: .8rem; font-weight: 500;
}
.product-detail-info h1 {
    font-size: 1.8rem; font-weight: 800; color: var(--primary); margin-bottom: .6rem;
}
.product-detail-desc {
    font-size: .95rem; color: var(--text-body); line-height: 1.8; margin-bottom: 1rem;
}
.product-detail-features h3 {
    font-size: 1.1rem; font-weight: 700; color: var(--text-dark); margin-bottom: .8rem;
}
.feature-list { display: flex; flex-direction: column; gap: .5rem; }
.feature-item {
    display: flex; align-items: flex-start; gap: .6rem;
    font-size: .9rem; color: var(--text-body); line-height: 1.6;
}
.fi-icon {
    color: var(--accent); font-weight: 700; font-size: .9rem;
    margin-top: 2px;
}
.product-cta-group { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 1.5rem; }

/* ── 详情错误/加载 ── */
.detail-error { text-align: center; padding: 3rem 1rem; }
.detail-error .err-icon { font-size: 3rem; margin-bottom: 1rem; }
.detail-error h2 { font-size: 1.4rem; font-weight: 700; color: var(--text-dark); margin-bottom: .5rem; }
.detail-error p { color: var(--text-body); margin-bottom: 1.5rem; }
.detail-loading { text-align: center; padding: 3rem; color: var(--text-light); }

/* ── 相关产品 ── */
#relatedProducts { margin-top: 3rem; padding-top: 2rem; border-top: 1px solid rgba(10,46,92,.06); }
#relatedProducts h2 { font-size: 1.3rem; font-weight: 700; color: var(--primary); margin-bottom: 1.2rem; }
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.related-card {
    background: #fff; border: 1px solid rgba(10,46,92,.06);
    border-radius: var(--radius); overflow: hidden;
    text-decoration: none; color: inherit;
    transition: var(--transition); display: block;
}
.related-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.related-card-img { width: 100%; height: 120px; object-fit: cover; }
.related-card-placeholder {
    width: 100%; height: 120px; background: var(--gradient-subtle);
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem;
}
.related-card-body { padding: .8rem 1rem; }
.related-card-body h4 { font-size: .88rem; font-weight: 600; color: var(--text-dark); margin-bottom: .25rem; }
.rc-cat { font-size: .75rem; color: var(--text-light); }

/* ── 响应式 ── */
@media (max-width: 1200px) {
    .products-grid, .advantages-grid, .manufacture-grid { grid-template-columns: repeat(3, 1fr); }
    .cases-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
    .certs-grid { grid-template-columns: repeat(4, 1fr); }
    .trust-grid { grid-template-columns: repeat(2, 1fr); }
    .related-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 1024px) {
    .products-grid, .advantages-grid, .manufacture-grid { grid-template-columns: repeat(2, 1fr); }
    .business-grid { grid-template-columns: 1fr; }
    .solutions-grid { grid-template-columns: 1fr; }
    .solution-card.featured { grid-column: 1; }
    .cases-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
    .certs-grid { grid-template-columns: repeat(3, 1fr); }
    .culture-cards { grid-template-columns: repeat(2, 1fr); }
    .team-grid, .service-grid { grid-template-columns: 1fr 1fr; }
    .landing-nav-grid { grid-template-columns: repeat(2, 1fr); }
    .section { padding: 85px 1.5rem; }
    .section-header { margin-bottom: 3rem; }
    .hero { padding: 130px 1.5rem 70px; }
    .hero-content { max-width: 750px; }
    .about-grid { gap: 2.5rem; }
    .contact-grid { gap: 2rem; }
    .product-detail-layout { gap: 2rem; }
    .timeline-wrap::before { left: 28px; }
    .timeline-item:nth-child(odd), .timeline-item:nth-child(even) {
        flex-direction: row; padding-left: 56px; padding-right: 0;
    }
    .timeline-dot { left: 28px; transform: translateX(-50%); }
    .carousel-arrow { width: 42px; height: 42px; font-size: 1.3rem; }
    .carousel-prev { left: 16px; } .carousel-next { right: 16px; }
    .carousel-slide-content { bottom: 14%; left: 8%; right: 8%; }
}

@media (max-width: 768px) {
    .hero { padding: 110px 1.2rem 60px; min-height: 90vh; }
    .hero h1 { font-size: 2rem; }
    .hero-desc { font-size: .93rem; }
    .hero-stats { gap: 1.5rem; flex-wrap: wrap; margin-top: 3rem; padding-top: 2rem; }
    .hero-stat-num { font-size: 1.8rem; }
    .hero-stat-label { font-size: .76rem; }
    .hero-badge { font-size: .76rem; padding: .4rem 1.2rem; margin-bottom: 1.5rem; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .hero-buttons .btn { width: 100%; max-width: 280px; justify-content: center; }
    .about-grid, .contact-grid, .form-row { grid-template-columns: 1fr; }
    .products-grid, .advantages-grid, .cases-grid, .news-grid, .service-grid,
    .landing-nav-grid, .team-grid, .manufacture-grid { grid-template-columns: 1fr; }
    .culture-cards { grid-template-columns: 1fr 1fr; }
    .certs-grid { grid-template-columns: repeat(2, 1fr); }
    .trust-grid { grid-template-columns: 1fr 1fr; }
    .business-grid { grid-template-columns: 1fr; }
    .solutions-grid { grid-template-columns: 1fr; }
    .section { padding: 70px 1.2rem; }
    .section-header { margin-bottom: 2.5rem; }
    .section-title { font-size: 1.6rem; }
    .section-subtitle { font-size: .93rem; }
    .product-detail-layout { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .page-subnav { top: 64px; }
    .page-subnav a { padding: .75rem 1rem; font-size: .8rem; }
    .timeline-wrap::before { left: 24px; }
    .timeline-item:nth-child(odd), .timeline-item:nth-child(even) {
        flex-direction: row; padding-left: 46px; padding-right: 0; margin-bottom: 2.2rem;
    }
    .timeline-dot { left: 24px; width: 13px; height: 13px; transform: translateX(-50%); }
    .timeline-content { padding: 1.2rem; }
    .timeline-year { font-size: .76rem; padding: .18rem .75rem; }
    .timeline-content h4 { font-size: .92rem; }
    .timeline-content p { font-size: .8rem; }
    .float-cta { right: 14px; bottom: 80px; gap: 8px; }
    .float-btn { width: 44px; height: 44px; }
    .carousel-slide-content { bottom: 12%; left: 6%; right: 6%; }
    .carousel-slide-content h2 { font-size: 1.3rem; margin-bottom: .4rem; }
    .carousel-slide-content p { font-size: .83rem; max-width: 400px; }
    .carousel-slide-link { padding: .5rem 1.4rem; font-size: .8rem; }
    .carousel-dots { bottom: 6%; gap: 8px; }
    .carousel-dot { width: 10px; height: 10px; }
    .carousel-arrow { width: 36px; height: 36px; font-size: 1.1rem; }
    .carousel-prev { left: 10px; } .carousel-next { right: 10px; }
    .filter-tabs { gap: .4rem; }
    .filter-tab { font-size: .8rem; padding: .45rem 1rem; }
}

@media (max-width: 576px) {
    .hero { padding: 100px 1rem 50px; min-height: auto; }
    .hero h1 { font-size: 1.7rem; }
    .hero-desc { font-size: .88rem; }
    .hero-stats { gap: 1rem; margin-top: 2.5rem; padding-top: 1.5rem; }
    .hero-stat-num { font-size: 1.5rem; }
    .hero-stat-label { font-size: .7rem; }
    .hero-badge { font-size: .73rem; padding: .35rem 1rem; margin-bottom: 1.2rem; }
    .culture-cards { grid-template-columns: 1fr; }
    .certs-grid, .trust-grid { grid-template-columns: 1fr 1fr; gap: .8rem; }
    .section { padding: 56px 1rem; }
    .section-title { font-size: 1.4rem; }
    .section-subtitle { font-size: .88rem; }
    .section-header { margin-bottom: 2rem; }
    .about-content h3 { font-size: 1.3rem; }
    .about-features { grid-template-columns: 1fr; }
    .about-experience-num { font-size: 1.7rem; }
    .case-image { height: 150px; font-size: 2.5rem; }
    .case-body { padding: 1rem; }
    .news-image, .news-cover-img { height: 150px; }
    .news-body { padding: 1rem; }
    .contact-form { padding: 1.5rem; }
    .contact-item { padding: .6rem; }
    .contact-item-icon { width: 40px; height: 40px; min-width: 40px; font-size: 1rem; }
    .contact-info h3 { font-size: 1.3rem; }
    .faq-question { padding: 1rem; font-size: .86rem; }
    .faq-icon { width: 26px; height: 26px; min-width: 26px; font-size: .78rem; }
    .float-cta { right: 12px; bottom: 72px; gap: 6px; }
    .float-btn { width: 40px; height: 40px; }
    .timeline-item { padding-left: 40px !important; margin-bottom: 1.8rem; }
    .timeline-content { padding: 1rem; }
    .carousel-slide-content { bottom: 10%; left: 5%; right: 5%; }
    .carousel-slide-content h2 { font-size: 1.1rem; }
    .carousel-slide-content p { font-size: .76rem; }
    .carousel-slide-link { font-size: .76rem; padding: .4rem 1.1rem; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.4rem; }
    .hero-stats { gap: .8rem; }
    .hero-stat-num { font-size: 1.3rem; }
    .hero-stat-label { font-size: .68rem; }
    .certs-grid, .trust-grid { gap: .6rem; }
    .cert-card { padding: 1.3rem .6rem; }
    .cert-icon { font-size: 1.8rem; }
    .cert-card h4 { font-size: .8rem; }
    .case-stats { flex-wrap: wrap; gap: .8rem; }
    .team-stat-card { flex-direction: column; text-align: center; gap: .8rem; }
    .team-stat-icon { margin: 0 auto; }
}

@media (max-width: 380px) {
    .hero h1 { font-size: 1.25rem; }
    .hero-desc { font-size: .82rem; }
    .hero-stats { flex-direction: column; gap: .5rem; align-items: center; }
    .section { padding: 48px .8rem; }
    .section-title { font-size: 1.2rem; }
    .btn { font-size: .82rem; padding: .6rem 1.2rem; width: 100%; justify-content: center; }
    .contact-form { padding: 1.2rem; }
    .form-submit { padding: .8rem; font-size: .9rem; }
}

@media (hover: none) and (pointer: coarse) {
    .business-card:active, .product-card:active, .advantage-card:active,
    .case-card:active, .news-card:active, .landing-nav-card:active,
    .solution-card:active, .culture-card:active, .cert-card:active,
    .service-card:active, .team-stat-card:active, .manufacture-card:active {
        transform: scale(.97); transition: transform .1s ease;
    }
    .faq-question { padding: 1.2rem; }
}

@media (min-width: 1600px) {
    .hero-content { max-width: 1100px; }
    .hero h1 { font-size: 4.2rem; }
    .hero-desc { font-size: 1.3rem; }
}